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1964 Map of Grable Coulee

Name: 1964 Topographic Map of Grable Coulee
Creator: U.S. Geological Survey
Published: 1967
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1967

About this map

The Milk River flows across the southern reaches of this landscape, marking a vital water source for the surrounding prairie of Blaine County. This 1964 survey captures the agricultural and irrigation infrastructure essential to the region, including the Fort Belknap Canal and Harlem Canal. These waterways, alongside Thirtymile Reservoir, illustrate the systematic management of the river basin's resources during the mid-20th century. The northern portion of the Fort Belknap Indian Res is visible here, showing the intersection of tribal land with the expanding regional transport network.

Industrial activity is noted by several Gravel Pits scattered near the drainages of Wayne Creek and Grable Coulee. The heavy infrastructure of the Great Northern railroad parallels the river valley, providing the primary connection for moving goods across the Montana plains. Higher ground is defined by seasonal watercourses like Harts Coulee and Forgey Creek, which feed into the primary river system, while Grable Coulee Spring provides a rare natural water point in the higher breaks.